Astronomik H-alpha 6nm CCD Filters

$299.00$749.00 AUD

The H-alpha 6nm CCD-Filter allows you to isolate almost completely the most subtle detail from the H-alpha line. The gain in contrast will be enormous and is especially useful in combating heavy light pollution in urban areas when taking photos.

  • Guaranteed transmission of at least 90% at H-alpha (656nm) (typical tranismission around 96%)
  • Suitable for scopes down to f/4. MFR coating process eliminates shift in transmission with different focal ratios
  • Full-Width-Half Maximum (FWHM): 6nm
  • Perfect blocking of unwanted light from UV right through the IR region
  • Filter thickness 1mm – parfocal with all other Astronomik filters
  • 10 year guarantee – insensitive to moisture and aging. Scratch resistant
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